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Full text of "Handbook Of Chemical Engineering - I"

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44
CHEMICAL ENGINEERING
used with satisfactory results. Flanges should always be ring-faced or spot-faced on the back, and of suitable thickness to permit of this process. Gaskets are of rubber, rubber with wire-insertion, rubber with canvas insertion, asbestos with wire insertion, corrugated copper and corrugated steel.
hfli t-A2'
45-Deq. Elbow.
Tee
Single Sweep Tee-
Double Sweep Tee.''
Side Outlet Tee.
lateral*.
Reducer.
P-6-
Reduced
Croa
FIG. 26.Standard flanged fittings for W. I. and steel pipe.
TEMPLATES FOB DRILLING EXTRA HEAVY FLANGED VALVES AND American Standard
Size, inches	Diameter of flanges, inches	Thickness of flanges, inches	Bolt circle diameter, inches	Number of bolts	Size of bolts, inches
3	m	IH	6%	8	M
3H	9	%	7K	8	M
4	10	IK	7K	8	M
4M	10H	IHe	8H	8	M
5	11	1%	9H	8	M
6	12H	IJfe	10%	12	%
7	14	1	11%	12	H
8	15	1.	13	12	%
9	16K	1	14	12	i
10	17M	1%	15H	16	i
12	20^	2	17?i	16	1H
14	23	2^	20K	20	m
15	24^	2^6	21H	20	IK
16	25^	2K	22^	20	IK
1 These templates are in multiples of four, so that fittings may be made to face in any quarter and bolt holes straddle the center line. Bolt holes are drilled H in. larger than nominal diam. of bolts.